common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/fpga/zynqmppl.c b/drivers/fpga/zynqmppl.c
index b995bcc..2ac4e38 100644
--- a/drivers/fpga/zynqmppl.c
+++ b/drivers/fpga/zynqmppl.c
@@ -12,6 +12,7 @@
 #include <zynqmppl.h>
 #include <zynqmp_firmware.h>
 #include <asm/cache.h>
+#include <linux/bitops.h>
 #include <linux/sizes.h>
 #include <asm/arch/sys_proto.h>
 #include <memalign.h>